Soldering flux



Patented Apr. 24, 1923.

.umrsof STATES PATENT OFFICE.

SOLDERING FLUX.

No Drawing.

To all whom it may concern."

Be it known that I, HARRY A. PALLADY, a citizen of the United States,residing at Seattle, in the county of King and State of g Washington,have invented a certain new and useful Improvement in Soldering Fluxes,of which the following is a specification.

My invention relates to improvements in w soldering fluxes that areadapted for use to cause the fusion of metals with solder and the objectofmy invention is to provide a soldering flux that will fulfillall'therequirements of the ordinary soldering flux and that will, inaddition, cause solder to adhere firmly tometals, such as cast iron andthe like, that have hertofore been diflicult to fuse with solder.

My composition consists of a mixture of 2 zinc chloride (ZnCl tinamalgamated, and sal ammoniac (ammonium' chloride NI-LCl) all taken inground or powdered forru screened and thoroughly mixed together andmoistened with suflicient glycerine or other similar liquid substance toform a paste that is readily applied.

In preparing the composition I prefer to use the ingredients in thefollowing proportions by weight: c

Zinc chloride 44.44% Tin amalgamated 33.33% Sal ammoniac 21.90% IGlyc'erine 33% Application filed. August 21, 1922. Serial No. 583,366.

I have found, however, that satisfactory results may be obtained withoutthe use oi ,the glycerine or by the use of other liquid substances tomoisten the above named ingredients.

The object of adding the'moistenin substance is to make it convenient toapp y the flux to the parts to be soldered and also to keep the flux ingood condition foruse at all times.

This composition is relatively inexpensive to manufacture and will giveexcellent re- I su-lts when used for soldering cast iron, iron invarious forms, or other metals that may be readily soldered by the useof other fluxes. The mixture is used in the ordinary manner by firstapplying the same to the part to be soldered and then applying themelted solder by means of any well known tools used for such purposes.

Obviously changes may be made in the proportions of the ingredients ofmy composition herein disclosed without departing from the spirit of myinvention.

What I claim is:

A soldering flux comprising zinc chloride 44.44%, tin amalgamated33.33%, sal ammoniac 21.90% and glycerine 33%.

In-witness whereof, I hereunto subscribe my name this 5th day of AugustA. D. 1922.

HARRY A. PALLADY.

